### Random Post

### Recent Posts

- Tantalizer 450: Marriage problems
- Enigma 1057: Recycled change
- Enigma 452: Figure out these letters
- Puzzle 46: I lose my specs
- Enigma 1058: A row of colours
- Enigma 451: Double halved
- Tantalizer 451: Death rates
- Enigma 1059: Century break
- Enigma 450: A pentagonal problem
- Puzzle 48: Verse on the island

### Recent Comments

Jim Randell on Tantalizer 450: Marriage … | |

Brian Gladman on Enigma 1057: Recycled cha… | |

Jim Randell on Enigma 1057: Recycled cha… | |

geoffrounce on Enigma 452: Figure out these… | |

Jim Randell on Enigma 452: Figure out these… |

### Archives

### Categories

- article (11)
- enigma (1,183)
- misc (2)
- project euler (2)
- puzzle (46)
- site news (46)
- tantalizer (50)
- teaser (3)

### Site Stats

- 184,974 hits

Advertisements

This Python program runs in 32ms.

Solution:The coded version of KATHRYN is PZOSIBU.And here’s a different approach. Instead of considering each coding key letter and looking at what the encoded message is, it considers each letter of the plaintext and eliminates coding letters that won’t work for that letter. So it only needs to encode 47 letters rather than 26×7 = 182 letters (not that it makes much difference on a problem of this size).